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Top Forums Shell Programming and Scripting SH if statement using FLOAT values Post 302297741 by sjepsen on Saturday 14th of March 2009 09:27:48 PM
Old 03-14-2009
Java SH if statement using FLOAT values

Today I spent longer than I'd like to admit figuring out how to write a Bourne shell IF statement that tests a FLOAT value before executing a block of statements. Here's the solution I found, which invokes bc. Hope this will come in handy for someone:

value = [some floating point number]
testval = [some floating point number]

if [ `echo "if($value > $testval) 1; if($value <= $testval) 0" | bc` -eq 1 ]
then
body of if statement
fi


--Steve
 

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OCI_FIELD_PRECISION(3)													    OCI_FIELD_PRECISION(3)

oci_field_precision - Tell the precision of a field

SYNOPSIS
int oci_field_precision (resource $statement, mixed $field) DESCRIPTION
Returns precision of the $field. For FLOAT columns, precision is nonzero and scale is -127. If precision is 0, then column is NUMBER. Else it's NUMBER(precision, scale). PARAMETERS
o $statement - A valid OCI statement identifier. o $field - Can be the field's index (1-based) or name. RETURN VALUES
Returns the precision as an integer, or FALSE on errors. EXAMPLES
Example #1 oci_field_precision(3) Example <?php // Create the table with: // CREATE TABLE mytab (c1 NUMBER, c2 FLOAT, c3 NUMBER(4), c4 NUMBER(5,3)); $conn = oci_connect("hr", "hrpwd", "localhost/XE"); if (!$conn) { $m = oci_error(); trigger_error(htmlentities($m['message']), E_USER_ERROR); } $stid = oci_parse($conn, "SELECT * FROM mytab"); oci_execute($stid, OCI_DESCRIBE_ONLY); // Use OCI_DESCRIBE_ONLY if not fetching rows $ncols = oci_num_fields($stid); for ($i = 1; $i <= $ncols; $i++) { echo oci_field_name($stid, $i) . " " . oci_field_precision($stid, $i) . " " . oci_field_scale($stid, $i) . "<br> "; } // Outputs: // C1 0 -127 // C2 126 -127 // C3 4 0 // C4 5 3 oci_free_statement($stid); oci_close($conn); ?> NOTES
Note In PHP versions before 5.0.0 you must use ocicolumnprecision(3) instead. This name still can be used, it was left as alias of oci_field_precision(3) for downwards compatability. This, however, is deprecated and not recommended. SEE ALSO
oci_field_scale(3), oci_field_type(3). PHP Documentation Group OCI_FIELD_PRECISION(3)
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